The Carry-On Packing List That Works for Any Trip

Overpacking is the most common travel regret, and it is effortless to see why. Packing the night before, you imagine every possible scenario: rain, a fancy dinner, a sudden heat wave. The result is a heavy bag, extra baggage fees and clothes you never wear. A carry-on forces you to decide what actually matters, and it also saves time at the airport.

This list works for a trip of 3 to 10 days anywhere, because it is built on a formula rather than a destination. You will find the core clothing counts, the toiletry rules, the tech and document basics and a few packing tricks that make everything fit.

Start with the bag and the airline rules

Many US airlines accept carry-ons of about 22 by 14 by 9 inches, but limits differ, and budget carriers often charge for anything beyond a little personal item. Check your airline's current size and weight limits before you buy or pack. A soft-sided bag squeezes into overhead bins more easily than a hard shell. Use a little backpack or tote under the seat for items you need in flight.

The clothing formula: 5-4-3-2-1

For a week, pack five tops, four bottoms, three layers, two pairs of shoes and one dressy item. Keep everything in a coordinated palette, such as navy, black, gray and white with one accent, so every top works with every bottom. Pick fabrics that resist wrinkles and dry overnight, like merino blend, polyester blends or lightweight cotton knits. Plan to wash something once during longer trips.

Underwear, socks and sleepwear

Bring one pair of underwear per day up to five or six, and then rely on a sink wash with a few drops of travel detergent. Pack three pairs of socks, and add a pair of thicker ones for hiking or flights. A set of light sleepwear can double as loungewear. Roll socks into your shoes to save space.

Shoes take more room than you think

Wear your bulkiest pair on the plane. Choose one comfortable walking shoe and one that works for dinner or sandals. Place shoes at the bottom of the bag near the wheels, sole against the wall, and fill the inside with socks or chargers. Put a shower cap or plastic bag around soles to protect clothes.

Toiletries and the 3-1-1 rule

In the US, liquids in a carry-on must be in containers of 3.4 ounces (100 milliliters) or less, all fitting in one quart-size clear bag. Decant shampoo, lotion and face wash into little bottles, or use solid bars and tablets. Many hotels provide basics, so call ahead and pack less. Keep medications in their original containers in your carry-on, and bring a little first-aid kit with bandages and pain relievers.

Tip: Place your liquids bag at the top of the bag or in an outside pocket so you can pull it out quickly at security.

Tech, documents and money

Bring your phone, a charger, a power bank within your airline's limits, a universal adapter if traveling abroad and headphones. Keep your passport or ID, boarding passes, insurance details and a backup credit card in a zipped pouch. Save digital copies of documents in a secure place, and tell your bank about foreign travel if they require it.

Packing methods that save space

• Roll casual shirts and jeans to reduce creases and gaps.
• Fold dressy items flat or use packing cubes to keep them neat.
• Compress bulky sweaters in a cube, or wear them on the plane.
• Use the empty space inside shoes and hats.
• Put heavier items near the wheels for balance.

A sample 7-day packing count

For a spring week away, a bag might hold five tops, two pairs of pants, one pair of shorts, one sweater, one rain shell, seven pairs of underwear, four pairs of socks, sleepwear, walking shoes and sandals. Weigh it at home and aim for under 15 pounds before toiletries, so you have room for souvenirs.

Common pitfalls to avoid

Do not pack for the one-in-twenty chance, like a formal event you may not attend. Avoid duplicates, such as three pairs of jeans, since one pair can be worn repeatedly. Never pack valuables like medications or electronics in a checked bag. Do a final test: lift your bag, walk around the room for a minute and see if it feels comfortable. If not, remove two items and test again.

Once you have a list that works, save it on your phone. Next time you will pack in 20 minutes, and the lightness of the bag will make the whole trip feel easier.